Final answer:
Initially, Macbeth closely consults with Lady Macbeth on matters of murder, but as the play progresses, he becomes more independent and secretive, not involving her in his later schemes such as the murder of Banquo.
Step-by-step explanation:
As the play Macbeth progresses, Macbeth's relationship with Lady Macbeth evolves significantly, particularly concerning their consultation over murder. Initially, Lady Macbeth is the driving force behind the plan to kill King Duncan, and Macbeth actively consults her. This is seen when he enters saying, "I have done the deed. Didst thou not hear a noise?" indicating that he seeks her out immediately after the murder. However, after the murder of Duncan, Macbeth increasingly acts on his own accord and does not seek Lady Macbeth's counsel. For instance, he plans the murder of Banquo without her involvement, signifying a shift in his reliance on Lady Macbeth. This change suggests that Macbeth is becoming more independent in his tyranny and is consumed by his own fears and ambitions, distancing himself from his wife's influence.
Furthermore, in the aftermath of the initial murder, Lady Macbeth attempts to steady Macbeth's nerves, as seen when she tells him, "Who was it that thus cried? Why, worthy thane, You do unbend your noble strength, to think So brainsickly of things. Go get some water, And wash this filthy witness from your hand." This shows her trying to manage the situation and Macbeth's spiraling emotions. But as the play progresses, Macbeth withholds information and plans from Lady Macbeth, an indication of the change in the dynamic of their relationship.